A 23-station transfer line has been logged for 5 days (total time = 2400 min). During this time there were a total of 158 downtime occurrences on the line. The accompanying table identifies the type of downtime occurrence, how many occurrences of each type, and how much total time was lost for each type. The transfer line performs a sequence of machining operations, the longest of which takes 0.42 min. The transfer mechanism takes 0.08 min to index the parts from one station to the next each cycle. Assuming no parts removal when the line jams, determine the following based on the five-day observation period:
(a) How many parts were produced?
(b) Downtime proportion,
(c) Production rate, and
(d) Frequency rate associated with the transfer mechanism failures.

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Number of occ Total time lost Type of downtime Associated with stations urences Tool-related causes Mechanical failures Miscellaneous Subtotal 104 21 1 132 26 158 520 min 189 min 84 min 793 min 78 min 871 min Transfer mechanisnm Totals